[c-nsp] BGP doesn't advertise prefixes

[Samol]

Hi Adam,

I once tried removing the route-map from the BGP peer and as result we got
all routes advertised. I then double tripple check on the route-map, still
found no mistake so far. I will try as you recommended, but won't be able
to do straight away, it's in production network and need approval.

Regards,

2015-05-01 5:38 GMT+07:00 Adam Vitkovsky <Adam.Vitkovsky at gamma.co.uk>:

> Hi Samol,
>
> Alright the config seems ok so I think now's the time to simplify things a
> bit.
> Can you get a rid of all the config and just try to push that one prefix
> across to see if it works with just a simplest config possible?
> Then try to build the config backwards by adding more and more elements to
> it to possibly see what the culprit is.
> If possible try to reset the peer every time you add an element to make
> sure the prefix gets advertised even after a peer reset.
>
> adam
> > -----Original Message-----
> > From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> > Samol
> > Sent: 30 April 2015 16:24
> > To: Gert Doering
> > Cc: cisco-nsp at puck.nether.net
> > Subject: Re: [c-nsp] BGP doesn't advertise prefixes
> >
> > Thanks Gert for the clues. I went thru rule again and below is the rules
> > applied to our peer.
> >
> > neighbor EQUINIX-TRANSIT prefix-list BOGON in
> > neighbor EQUINIX-TRANSIT route-map EQUINIX-TRANSIT-IN in
> > neighbor EQUINIX-TRANSIT route-map *EQUINIX-TRANSIT-OUT* out
> >
> >
> > rtr#sh route-map *EQUINIX-TRANSIT-OUT*
> > route-map EQUINIX-TRANSIT-OUT, permit, sequence 5
> > Match clauses:
> > ip address prefix-lists: *CP-M21-PREPEND*
> > Set clauses:
> > as-path prepend 123 123 123
> > Policy routing matches: 0 packets, 0 bytes
> > route-map EQUINIX-TRANSIT-OUT, permit, sequence 10
> > Match clauses:
> > community (community-list filter): 500
> > Set clauses:
> > Policy routing matches: 0 packets, 0 bytes
> >
> > rtr#sh ip prefix-list *CP-M21-PREPEND*
> > ip prefix-list CP-M21-PREPEND: 6 entries
> > seq 5 permit 123.0.73.0/24
> > seq 10 permit x.x.a.0/24
> > seq 15 permit x.x.b.0/24
> > seq 16 permit x.x.c.0/24
> > seq 20 permit x.x.d.0/24
> > seq 25 permit x.x.e.0/24
> >
> > rtr#sh ip community-list 500
> > Community (expanded) access list 500
> > permit *123:123*
> >
> > rtr#sh ip bgp 123.0.73.0 | in Com
> > Community: *123:123* 65501:24115
>
> >
> >
> > As per this rule, the route 123.0.73.0/24 ( sorry for the change of IP
> and
> > hidden,but this would be preferred), should match with route-map seq 5
> > with
> > prefix-list seq 5 as well. We have no other rules attached to this peer
> in
> > the outbound direction.
> >
> > Regards,
> >
> > 2015-04-30 21:56 GMT+07:00 Gert Doering <gert at greenie.muc.de>:
> >
> > > Hi,
> > >
> > > On Thu, Apr 30, 2015 at 09:49:33PM +0700, Samol wrote:
> > > > thanks for advice. I will double check. probably need the fresh eyes
> to
> > > > look into it. but by using the command as below, could we say that
> the
> > > rule
> > > > is correctly matched?
> > >
> > > Yes, but it is not the only criteria - you could have a filter-list,
> > > prefix-list or anything else on the peer that prevents announcement.
> > >
> > > gert
> > > --
> > > USENET is *not* the non-clickable part of WWW!
> > > //
> > > www.muc.de/~gert/
> > > Gert Doering - Munich, Germany
> > > gert at greenie.muc.de
> > > fax: +49-89-35655025
> > > gert at net.informatik.tu-muenchen.de
> > >
> >
> >
> >
> > --
> > Samol Khoeurn
> > (855) 077 55 64 02 / (855) 070 52 53 46
> > Network Engineer
> > Cisco: CCNA/CCNP SP/CCIP/
> > Juniper: JNCIA/JTNOC/JNCIS-ENT,SP,SEC/JNCIP-ENT,SP
> > Blog: http://thesaltedegg.net
> > www.linkedin.com/in/samolkhoeurn
> > _______________________________________________
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>
>
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-- 
Samol Khoeurn
(855) 077 55 64 02 / (855) 070 52 53 46
Network Engineer
Cisco: CCNA/CCNP SP/CCIP/
Juniper: JNCIA/JTNOC/JNCIS-ENT,SP,SEC/JNCIP-ENT,SP
Blog: http://thesaltedegg.net
www.linkedin.com/in/samolkhoeurn